package LeetCode;

import java.util.List;

public class Text {
    public static void main(String[] args) {
        TreeNode node = new TreeNode(new TreeNode(new TreeNode(4),2,null),1,new TreeNode(3));
        System.out.println(node.tree2str(node));
/*        List<List<Integer>> list = node.levelOrder(node);
        System.out.println(list);
        StringBuilder stringBuilder = new StringBuilder();*/

    }
}
